Christ Crucified lectures on 1 Corinthians 2  - Adolph Saphir

122 Pages, eight lectures, with two bonuses in the end; a free translation and an insightful poem. This high-sheen handsome and affordable paperback has a recommendation by Pastor Gregory Reynolds of the Amoskeag Presbyterian Church. It has a partial book list by Pietan Publication on the back.
 
It helps one test their faith and ask themselves the hard question of self-examination to see if they're of the faith.